C. F. Perdrisat

TL;DR: Scattering experiments show that in carbon-12 the neutron-proton pairs are nearly 20 times as prevalent as proton- Proton pairs and, by inference, neutron-neutron pairs, which has implications for understanding cold dense nuclear systems such as neutron stars.

TL;DR: In this article, the authors measured Pt and P, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic epepreaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV2.

TL;DR: New measurements of the proton electromagnetic form factor ratio using the recoil polarization method are reported, extending the range of Q2 for which G(E)(p) is accurately determined by more than 50%, which will provide significant constraints on models of nucleon structure in the nonperturbative regime.

TL;DR: The smaller r p the authors have now measured supports the value found by two previous muonic hydrogen experiments, and agrees with the revised value for the Rydberg constant, one of the most accurately evaluated fundamental constants in physics.

TL;DR: In this paper, the authors used the Jefferson Lab Hall Focal Plane Polarimeter to determine the longitudinal and transverse components of the recoil proton polarization in ep elastic scattering; the ratio of these polarization components is proportional to the proportion of the two form factors.